Answer

Verified

385.8k+ views

**Hint:**The light from the sun travels a distance and reaches earth. We know that light travels with a given constant velocity. If we know the distance between the sun and the earth, we can calculate the time taken by the light to reach the earth using the distance and velocity of light.

Formula used:

$ v = \dfrac{x}{t} $

where $ v $ stands for the velocity of the moving object, $ x $ stands for the distance travelled by the object and $ t $ stands for the time taken by the object to cover the distance.

**Complete step by step solution**

We know the velocity with which light travels and the distance between the sun and the earth. Using these values we can easily calculate the time taken for the light from the sun to reach earth.

The distance between the earth and the sun is nearly $ 150 $ million kilometres.

We know that, the velocity of light,

$ c = 3 \times {10^8}m/s = 300000km/s $

We know that the formula for velocity is,

$ v = \dfrac{x}{t} $

Here $ v = c $ and we can write the formula for time from the above formula as,

$ t = \dfrac{x}{v} $

We know that, $ x = 150000000km $

and $ v = 300000km/s $

Substituting the values in the above equation, we get

$ t = \dfrac{{150000000km}}{{300000km/s}} = 500s $

**Therefore, the answer is: Option (C); $ 500s $ .**

**Additional information**

Sun’s energy reaches the earth by means of radiation, conduction and convection. Photons from the surface of the sun travel through the vacuum and reach the surface of the earth.

**Note**

To answer this question we need to know the distance between the sun and the earth and the velocity of light through vacuum. The time taken by the light to reach different planets in the solar system varies with their distance from the sun. It takes only $ 3 $ minutes for the sunlight to reach mercury and it will take $ 5.3 $ hours for the sunlight to reach pluto.

Recently Updated Pages

Which of the following materials is likely to have class 8 physics CBSE

What is a quasar What is their importance class 8 physics CBSE

Identify the parts which vibrate to produce sound in class 8 physics CBSE

Write the relation between liter and cm3 class 8 physics CBSE

Define the terms a ray of light and a beam of ligh class 8 physics CBSE

Suppose you are in a car and it is raining heavily class 8 physics CBSE

Trending doubts

Difference Between Plant Cell and Animal Cell

Give 10 examples for herbs , shrubs , climbers , creepers

The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths

Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE

Fill the blanks with the suitable prepositions 1 The class 9 english CBSE

List some examples of Rabi and Kharif crops class 8 biology CBSE

Which are the Top 10 Largest Countries of the World?

The provincial president of the constituent assembly class 11 social science CBSE

Write the 6 fundamental rights of India and explain in detail